Dark matter mass bounds from phase-space density

by Dr Oleg Ruchayskiy (EPFL Lausanne)

Wednesday 5 Nov 2008, 11:00 → 12:00 Europe/Zurich

1/1-025 (CERN)

I will discuss how the evolution of phase-space densities in dark matter-dominated systems can lead to restrictions on the mass of dark matter particles. I will critically review existing approaches and will discuss what bounds can be obtained based on modern astronomical observations of dwarf spheroidal galaxies -- the most dark matter dominated objects known.

References

• S. Tremaine and J. E. Gunn, Phys. Rev. Lett. 42, 407 (1979).
• A. Boyarsky, O. Ruchayskiy, D. Iakubovskyi arXiv:0808.3902